Grading machine



June 26, 1934. w. RENZ GRADING MACHINE Filed Aug. 10, 1933 2 Sheets-Sheet l Inventor f1 llorney W. RENZ GRADING- MACHINE June 26, 1934.

Filed Aug. 10, 1933 2 Sheets-Sheet 2 Inventor ,WZZZZ ZZIYZWEIZZ f1 tlomey Patented June 26, 1934 UNITED STATES PATENT OFFICE GRADING MACHINE Application August 10, 1933, Serial No. 684,591

1 Claim.

This invention appertains to new and useful improvements in grading machines, and is an improvement on. my Patent No. 1,851,447, dated March 29, 1932.

The principal object of the present invention is to provide a stabilizing foot for attachment to the mold board for steadying the grading blade in its work.

Another important object of the invention is to provide means for accurately adjusting the blade to the proper horizontal angle and also whereby the grading blade can be set at the proper pitch for action against the ground.

Other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a vertical sectional view through the grading machine, disclosing the means whereby the grading blade can be adjusted.

Figure 2 represents a top plan view of the blade and fragmentarily showing parts of the carriage which supports the blade.

Figure 3 represents a rear elevational view of the mold board and blade.

Figure 4 represents a perspective view showing the draw bar and its connecting bracket.

Figure 5 represents a sectional view taken substantially on line 55 of Figure 1.

Figure 6 represents a perspective view of one of the perforated angle bars.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 represents the beam of a conventional sulky plow carriage, the depending end of which is provided with a foot member 6 having an extension perforated to receive a retaining bolt 8 which can be extended through any one of the openings in the outstanding flange of the angle iron 9. The foot 6 is attached to the lower end of the beam 5 by bolts 10-11.

Also secured to the back side of the mold board 12 with the angle iron 9 is the angle iron 13 located above the angle iron 9 and provided with perforations in the outstanding flange thereof. Numeral 14 represents an elongated bar having a plurality of longitudinally spaced openings 15 therein at one end and a right angularly twisted end portion 16 at its opposite end provided with an opening for receiving a bolt 17, which bolt extends through any one of the openings in the said outstanding perforated flange of the angle iron 13.

The lower portion of the beam 5 is provided with an opening situated somewhat inwardly of the foot 6 to receive the bolt 18 which bolt extends through any one of the openings 15 in the bar 14 and obviously, by determining which opening 15 the bolt 18 extends through, the mold board 12 will be set at the corresponding inclination, transversely speaking, while the longitudinal inclination is determined by the hanger strap 19, which has its lower end connected, as at 20, to the upstanding plate 21 on the mold board 12, while its upper end is secured to the angle iron 22 by passing a bolt 23 through any one of the openings 24 therein and through the upper end of the strap iron 19. U-shaped clamp members 25 engage the beam 5 and serve to secure the angle iron 22 thereto. The strap 19 has openings 26 therein so that proper vertical adjustment of the mold board at this end can be secured.

As is clearly shown in Figures 1, 2 and 4, an angle bracket 27 is secured to the beam 5, with the outstanding portion thereof provided with an opening 28 through which a bolt 29 can be disposed. This bolt is adapted to extend through the eye end 30 of the draw rod 31, while the rear end of this draw rod is threaded and slidably disposed through a corresponding opening in the elevated end of the mold board, while jamb nuts 3232 are provided on this threaded end portion of the draw bar 31 to retain the mold board in an adjusted position on the said draw rod.

An additional and important feature is the drag shoe 33 which has an elongated shank 34 extending therefrom and provided with longitudinally spaced openings 35. A bolt 36 extends through one of the openings adjacent the free end of the shank 34 and through the lower portion of the beam 5, while a connecting link 37 is provided with openings at each end, one end of which receives a bolt 38 which extends through one of the lower openings in the shank 34. The bolt 11 extends through the opposite end of the connecting link 37 and also through the foot 6 and lower end of the beam 5. Obviously, this shoe 33 can be adjusted to secure the proper drag for the mold board and blade 40 so as to afford a sufiicient bearing on the ground to steady the mold board and blade while in use.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

In combination, a wheeled carriage, said carriage being provided with a depending beam, a grading blade supported by the beam, a drag shoe, means for adjustably connecting the said drag shoe to the said beam, a pivotal connection between the lower end of the beam and the lower portion of the blade, a drag bar between one end of the said blade and an upper portion of the said beam, and adjustable means between the rear end of the said drag bar and the said blade.

WILLIAM RENZ. 

